267 results about "Fluoroboric acid" patented technology

The invention provides a non-aqueous electrolyte, a lithium ion battery, a battery module, a battery pack and a power utilization device, the non-aqueous electrolyte comprises a lithium salt, an organic solvent and an electrolyte additive, and the electrolyte additive comprises 1, 3-propane sultone, fluoroethylene carbonate, vinylene carbonate, lithium tetrafluoroborate and a compound I shown in the formula I. The non-aqueous electrolyte is applied to the lithium ion battery, and the cycle life of the lithium ion battery is prolonged.

A compound or molecular complex. The compound or molecular complex comprises: a metal chelator configured for chelation with a radioactive isotope or a non-radioactive isotope; and a trifluoroborate (BF3)-containing moiety configured for 19F / 18F exchange or a precursor thereof; and optionally a cell-targeting domain.

The invention relates to viologen-anthraquinone composite electrochromic liquid and a preparation method thereof, the viologen-anthraquinone composite electrochromic liquid comprises 1.2-2.5 parts by mole of viologen salt, 0.8-1.5 parts by mole of anthraquinone derivative and 8-12 parts by mole of electrolyte; the viologen salt is ethyl viologen tetrafluoroborate or heptyl viologen tetrafluoroborate or octyl viologen tetrafluoroborate; the anthraquinone derivative is 1-ethylamino-4-hydroxy anthraquinone or acid blue 43; the preparation method comprises the following steps: preparing an electrolyte solution; adding purple refined salt and anthraquinone derivatives according to the formula; fully dissolving the electrochromic material to form uniform and transparent initial liquid; and degassing the initial liquid to remove oxygen dissolved in the initial liquid. The electrochromic liquid has the advantages that after the purple refined salt and the anthraquinone derivative are added into the dissolving solution according to the proportion of the formula, the two color-changing materials are jointly dissolved in the electrolyte, and when the two color-changing materials are reduced at the same time, spectrum superposition absorbed by the two color-changing materials can cover the whole visible region, so that black and white switching of the electrochromic liquid is realized, and the use effect is good.

The invention discloses a lithium fluoride in-situ coated sulfide solid electrolyte and a preparation method thereof, and belongs to the technical field of solid-state lithium batteries, the preparation method comprises the following steps: mixing a sulfide solid electrolyte with lithium tetrafluoroborate to obtain mixed powder, and under the disturbance of inert gas flow, carrying out a heat-preservation and pressure-maintaining reaction to obtain the lithium fluoride in-situ coated sulfide solid electrolyte. After the reaction is finished, naturally cooling to room temperature to obtain a lithium fluoride coated sulfide solid electrolyte; the mass fraction of the lithium tetrafluoroborate in the mixed powder is 1-10%. The lithium tetrafluoroborate used in the preparation method provided by the invention is a common salt, no gas or liquid is generated in the reaction process, the preparation method is environment-friendly, the process is simple, and later industrial preparation is facilitated; the lithium tetrafluoroborate has the advantages of low cost and environmental friendliness; and particularly, the sulfide solid electrolyte can be uniformly dispersed and uniformly coated on the surface under airflow disturbance.

The invention provides a preparation method and application of a compound cesium ammonium fluoborate and a cesium ammonium fluoborate nonlinear optical crystal. The chemical formula of the compound is CsNH4B8O12F2; the chemical formula of the crystal is CsNH4B8O12F2, the crystal belongs to a trigonal system, the space group is P321, and the unit cell parameters are as follows: a = b = 6.5858 (4) + / -0.02, c = 7.8163 (6) + / -0.02, alpha = beta = 90 degrees, gamma = 120 degrees and Z = 1. The crystal is grown by adopting a vacuum high-temperature solution method, a room-temperature solution method or a hydrothermal method, and the ultraviolet transmission cut-off edge of the crystal is lower than 190 nm. The nonlinear optical effect of the crystal is about 2.5 times of that of KH2PO4 (KDP), and the shortest I-type phase matching wavelength is 175.5 nm. The crystal has the advantages of simple preparation method, low toxicity of used initial raw materials, small harm to human bodies, stable physical and chemical properties, uniaxial crystal, easiness in application and the like. The method can be widely applied to nonlinear optical devices such as ultraviolet and deep ultraviolet all-solid-state lasers, optical parametric oscillators and the like.

The invention relates to the technical field of electrolytes, in particular to a wide-temperature-range high-voltage lithium ion battery electrolyte containing an amide solvent and a preparation method of the wide-temperature-range high-voltage lithium ion battery electrolyte. The fluorinated amide solvent comprises a main solvent and a cosolvent, the main solvent comprises one or more of perfluoro-2-methyl pyrrolidone, perfluoro-N-methyl pyrrolidone, perfluoro-epsilon-caprolactam, N, N-difluoroethyl formamide and trifluoroacetamide, and the cosolvent comprises one or more of perfluoro-2-methyl pyrrolidone, perfluoro-N-methyl pyrrolidone, perfluoro-epsilon-caprolactam, N, N-difluoroethyl formamide and trifluoroacetamide. The lithium salt comprises one or more of lithium bis (fluorosulfonyl) imide, lithium bis (trifluoromethanesulfonyl) imide, lithium bis (oxalato) borate, lithium difluoro (oxalato) borate and lithium tetrafluoroborate; the functional additives comprise a high-voltage additive, a temperature-adaptive additive and a flame retardant. The obtained electrolyte can maintain good electrochemical performance in a wide temperature range, has high voltage stability, improves the energy density and safety of the lithium ion battery, and prolongs the cycle life of the lithium ion battery.

A method for preparing an ultra-microporous metal-organic framework (MOF) and its application in propylene and propane adsorption separation, belonging to the technical field of crystalline materials, is disclosed. The MOF is derived from the organic ligands D-camphoric acid, 3-amino-1,2,4-triazole, and anhydrous zinc acetate via a solvothermal reaction in N,N-dimethylformamide and tetrafluoroboric acid. Gas adsorption studies have shown that this MOF has the potential to separate propylene and propane gas molecules.

The invention discloses a preparation method and application of a pydiflumetofen intermediate, and the method comprises the following step: in the presence of cuprous oxide or cuprous salt and acid, synthesizing 2, 4, 6-trichlorobenzene diazonium fluoroborate and isopropenyl acetate into the pydiflumetofen intermediate of formula I, according to the invention, 2, 4, 6-trichloroaniline which is cheap and easy to obtain is used as a raw material to improve a Meerwein arylation reaction method, and finally industrial cheap and mass production of the intermediate I is realized.

The invention provides a six-membered sultam derivative as well as an electrochemical synthesis method and application thereof, and a 2-isoallylbenzenesulfonamide derivative and a hydroxyl-containing compound are electrified and reacted in an electrolyte to obtain the six-membered sultam derivative. The electrolyte comprises 2, 2, 6, 6-tetramethylpiperidine and an electrolyte tetrabutylammonium tetrafluoroborate; compared with the prior art, the sultam derivative can be obtained through reaction under the electrochemical condition, no oxidizing agent or reducing agent is needed in the reaction, no metal catalyst or high temperature is needed, synthesis steps are simple, side reactions are few, the yield of the target product is high, and the method can be used for industrial production.

This application relates to a copper-aluminum brazed terminal block and its manufacturing method, belonging to the field of power fittings technology. It consists of an aluminum-based terminal block with a copper sheet welded to it. The flux used in the welding is a high-performance, non-corrosive copper-aluminum flux composed of the following components: potassium fluoroaluminate, cesium ammonium fluoride, 1-butyl-3-methylimidazolium tetrafluoroborate, potassium fluorotitanate, and nano-copper oxide. The process involves chemically stripping the dense alumina film using highly active fluorine species released from a pure fluorinated ionic liquid, achieving film removal and avoiding the thermal effects of high temperatures. Secondly, a nano-titanium transition layer is generated in situ through a liquid-phase displacement reaction of potassium fluorotitanate on the nascent aluminum surface, achieving a qualitative change in joint strength from mechanical interlocking to intrinsic metallurgical bonding. Finally, the elimination of chlorine and the presence of a self-cleaning mechanism prevent the flux from absorbing moisture and hydrolyzing or causing electrochemical corrosion, thus ensuring long-term reliability and durability of the joint under harsh environments while achieving good connection performance.

This invention relates to a tetrafluoroborate imidazole-based metal ionic liquid, its preparation method, and its application in coating aluminum powder. The invention pertains to the preparation method of a tetrafluoroborate imidazole-based metal ionic liquid and its use in combination with aluminum powder to form a core-shell fuel (aluminum powder@metal ionic liquid). The aluminum powder@metal ionic liquid core-shell fuel uses aluminum as the core and a tetrafluoroborate imidazole-based metal ionic liquid as the shell material, prepared via solvent evaporation. This series of core-shell fuels exhibits excellent thermal properties and is primarily suitable for solid propellant fuel applications. Furthermore, the preparation method provided by this invention is simple, operates under mild conditions, and uses readily available raw materials.

An electrochemical method for preparing N-arylsulfonylimine compound, comprising the following steps: in air atmosphere, a sulfoximine compound and an alpha-keto acid are added into a reactor in a molar ratio of 1:2, an electrolyte tetrabutylammonium tetrafluoroborate, a catalyst nickel bromide are added, and then an acetone solution is added; the mixture is stirred by a magnetic stirring device, and is dissolved; two electrodes are inserted, a graphite electrode is used as a positive electrode, and a platinum sheet electrode is used as a negative electrode; 6mA of current is passed, and the current passing time is 3h; after the reaction is completed, the solvent is removed by vacuum evaporation to obtain a crude product, and the N-arylsulfonylimine compound is obtained by column chromatography purification. Compared with a traditional synthesis method, the method has the advantages that the reaction condition is mild, can be successfully carried out at room temperature, operation is simple, all operations can be carried out in an open system, an electric current is used as an oxidation method, pollution of a chemical oxidant is avoided, raw materials are easy to obtain, functional group compatibility is good, and the scope of application of a substrate is wide.

The present invention belongs to the technical field of electrocatalytic preparation of xanthene derivatives. The present invention provides a method for electrocatalytically preparing 9-(phenylsulfonyl)-xanthene derivatives, including: adding aryl diazonium tetrafluoroborate derivatives, xanthene, DABSO, tetrabutylammonium hexafluorophosphate, acetonitrile and acetic acid in an electrolytic cell, passing a direct current, and reacting for 2 hours at a certain temperature and under nitrogen protection conditions. The present invention adopts electrocatalytic synthesis of 9-(phenylsulfonyl)-xanthene, which uses electric current as an oxidant, does not require an external oxidant and other metal catalysts, and also provides higher catalytic activity and lower reaction energy barrier for the reaction; and there is no need to pre-functionalize the substrate, with high atom economy and good functional group tolerance, so various substituted 9-(phenylsulfonyl)-xanthene can be obtained with good yield. In the reaction, low-toxicity and economical acetonitrile is used as a solvent, which avoids the use of highly toxic solvents and is green and environmentally friendly.

The application provides a preparation method and application of a near-infrared two-region fluorescent sensor, and chiral single-walled carbon nanotubes are separated by using a double water phase extraction method; materials in the separation process include deionized water, polyethylene glycol, dextran, sodium dodecyl sulfate, sodium deoxycholate and cholic acid sodium hydrate; the chiral single-walled carbon nanotubes are dispersed and mixed with 4-nitrobenzene tetrafluoroboric acid diazonium salt to obtain the fluorescent sensor; high-purity (6,5)-SWCNT is efficiently and simply separated by using the double water phase extraction technology, the prepared SWCNT-NBD nanomaterial has good optical performance, including bright light emission in the near-infrared two-region, has good penetration capacity on biological tissues, the fluorescent detector (SWCNT-NBD) has low detection line, wide linear range, good selectivity on DA, and is convenient to prepare and low in cost.

The invention discloses a super capacitor electrolyte and a super capacitor, and relates to the technical field of super capacitors, the super capacitor electrolyte comprises an electrolyte, a solvent and a functional additive; the electrolyte comprises spiro quaternary ammonium tetrafluoroborate and triethyl methyl ammonium tetrafluoroborate; the solvent comprises acetonitrile and sulfolane; the functional additive is a compound with a crown ether structure prepared through a thiol-ene click reaction; the addition amount of the functional additive is 1-10% of that of the solvent. The supercapacitor electrolyte system can resist high voltage and has wide temperature adaptability, that is, the supercapacitor electrolyte system has good high temperature resistance and low temperature resistance, so that the application requirement of a supercapacitor in a complex and severe environment is met.

The invention discloses a supported catalyst and application thereof in synthesis of difluoroacetyl fluoride, the supported catalyst comprises a carrier and active components, the active components comprise superacid and an active auxiliary agent; in the supported catalyst, the loading capacity of the superacid is 20 wt%-25 wt%, and the loading capacity of the active auxiliary agent is 5 wt%-10 wt%; the superacid is selected from at least one of fluoboric acid, fluorosulfonic acid, fluoroantimonic acid and carborane acid; the active auxiliary agent is selected from at least one of molybdenum nitrate, technetium nitrate, ruthenium nitrate, rhodium nitrate and chromic nitrate; when the supported catalyst is used for synthesizing difluoroacetyl fluoride, 1, 1, 2, 2-tetrafluoroethyl ethyl ether is used as a raw material, hydrogen fluoride is added under the action of the supported catalyst to inhibit generation of ethylene, and difluoroacetyl fluoride and fluoroethane are generated through cracking under relatively mild conditions; compared with an existing preparation method, the conditions are milder, and the one-way yield is larger than 95%.

The present invention discloses a method for transferring non-polar hydroxyapatite to a polar organic solution phase. The method comprises: redispersing HAP prepared by a hydrothermal method in cyclohexane, adding DMF in an equal volume to the cyclohexane, adding nitrosium tetrafluoroborate under stirring conditions, and after vigorous stirring, HAP spontaneously transfers from the cyclohexane phase to the DMF phase. During the ligand exchange process, NO in nitrosium tetrafluoroborate is converted to hydroxyapatite. + Unstable and easily converted into NO2 + , nitrous acid, tetrafluoroboric acid. NO + A large number of conversions in a short period of time will leave a large amount of BF4 in the system ‑ and protons, these acidic protons react with COO ‑ Combined with, reduce the strong coordination effect between oleic acid and Ca element on the surface of HAP particles, thereby promoting BF4 ‑ The present invention uses nitrosium tetrafluoroborate to remove oleic acid from the surface of HAP nanoparticles, BF4 ‑ The electrostatic repulsion effect ensures the uniform dispersion of HAP nanoparticles in DMF. This method is simple to operate and has high transfer efficiency, further expanding the application prospects of HAP nanoparticles.

The invention discloses a battery monomer, an isolating membrane, a preparation method of the isolating membrane, a battery device and a power utilization device, the battery monomer comprises the isolating membrane and electrolyte, and the isolating membrane comprises a porous base membrane; the coating is arranged on at least one side of the porous base membrane and comprises a polymer additive, and the polymer additive comprises a first functional group and a second functional group; the first functional group comprises one or more of bis (fluorosulfonyl) imino group, bis (trifluoromethyl) sulfonyl imino group, trifluoroboric acid group, hexafluorophosphoric acid group, sulfonic acid group, hexafluoroarsenate group, trifluoromethanesulfonic acid group, difluorophosphoric acid group, bis (oxalato) boric acid group, difluoro (oxalato) boric acid group, difluoro (oxalato) phosphoric acid group, tetrafluoro (oxalato) phosphoric acid group and imidazolyl; the second functional group comprises one or more of quaternary ammonium ions, pyrrolidinyl, pyrrolyl, piperidinyl, pyridyl and imidazolyl. The battery monomer has good dynamic performance; the invention provides the isolating membrane for realizing the beneficial effects of the battery monomer, the preparation method of the isolating membrane, the battery device and the power utilization device.

The invention provides a reflective integrated electrochromic device. The reflective integrated electrochromic device sequentially comprises a first substrate layer, a working electrode layer, an integrated electrochromic layer, a counter electrode layer and a second substrate layer, the integrated electrochromic layer comprises a metal source compound; the metal source compound is selected from silver chloride, silver acetate, silver nitrate, silver perchlorate, silver sulfate, silver cyanide, silver sulfide, silver hexafluorophosphate, silver tetrafluoroborate, silver tetrachloroaluminate, silver trifluoromethanesulfonate, silver bis (trifluoromethane sulfonimide), copper fluoride, copper chloride, copper cyanide, copper sulfate, copper acetate, copper aluminate, cuprous fluoride, cuprous chloride, cuprous cyanide, gold chloride and gold cyanide; the catalyst is one or more of gold sulfide, gold chloride, gold (II) sulfide, nickel chloride, nickel sulfate, cobalt chloride and platinum chloride. The device has a relatively large transmittance / reflectivity dynamic change range, can perform light and heat management at the same time, and can keep a stable coloring or fading state for one month or even several months under a no-load condition.

This invention relates to the field of electrochemical technology, specifically to fluoroalkylalkylbissulfonamide lithium, its preparation method, electrolyte, and lithium battery. A fluoroalkylalkylbissulfonamide lithium is provided, satisfying the general structural formula shown in Formula IV: [Formula omitted for brevity], where R1 is one or more of monofluoromethyl, difluoromethyl, or trifluoromethyl; n is an integer from 0 to 9; and R2 is selected from C1 to C10 alkyl groups. The fluoroalkylalkylbissulfonamide lithium can synergistically improve battery cycle life, service stability, and high-temperature performance with FEC. A method for preparing fluoroalkylalkylbissulfonamide lithium includes: mixing fluoroalkylsulfonyl chloride, alkylsulfonamide, and a weak base, and carrying out a first reaction to obtain fluoroalkylalkylbissulfonamide potassium; mixing fluoroalkylalkylbissulfonamide potassium and lithium tetrafluoroborate, and carrying out a second reaction to obtain [Foamide]. This significantly shortens the reaction route for preparing bissulfonamide lithium, and offers mild conditions, high yield, low production cost, and simple operation.

To provide a separation membrane with high separation performance for mixed gases containing acidic gases. [Solution] The separation membrane 10 of the present invention comprises a separation functional layer 1 containing graphene oxide, an ionic liquid, and a polymer. The ionic liquid is, for example, hydrophilic and contains imidazolium ions and tetrafluoroborate. The method for producing the separation membrane 10 of the present invention includes applying a coating solution containing graphene oxide, an ionic liquid, and a polymer to a substrate to obtain a coating film, and drying the coating film.

The invention discloses a nano composite ionic gel material with impact resistance and a preparation method thereof, and belongs to the field of polymer composite materials. The preparation method comprises the following steps: mixing and heating 5-methyl-2-isopropyl phenol and tetrabutylammonium tetrafluoroborate to prepare a solvent, adding isobornyl acrylate, hexafluorobutyl acrylate, KH570 modified silicon dioxide nanoparticles, 2, 6-diphenyl phenoxyethyl acrylate, a photoinitiator and a cross-linking agent into the solvent, and uniformly stirring to obtain the photocuring coating. And carrying out photopolymerization to obtain the nano composite ionic gel material. The nano-composite ionic gel material with impact resistance prepared by the invention is soft in a normal state and low in modulus; and when high-speed impact occurs, rapid and efficient energy dissipation occurs in the interior, the modulus is sharply increased, and the intelligent protection effect of'being rigid when encountering rigid and being flexible when encountering flexible 'can be achieved.

This invention discloses a method for large-size ammonium fluoroborate single crystal vapor phase growth, comprising the following steps: weighing two or more compounds containing NH4, B, O, and F as raw materials in a stoichiometric ratio of 1:4:6:1, mixing them thoroughly, adding a transport agent to obtain an initial mixture, and loading the initial mixture into a crystallization vessel; during the crystal growth stage, seed crystals or suspended seed crystals are selected by geometric selection and temperature screening among the grains; the crystallization vessel is dynamically heated within the temperature gradient zone of a vertical tube furnace, the dynamic heating being achieved by independently raising or lowering the temperatures of the high-temperature and low-temperature zones to dynamically control the temperature gradient of the crystal growth zone, so as to match it with the temperature gradient required at each stage of the crystal growth process; the raw materials crystallize in the crystal growth zone under the transport agent, resulting in large-size ammonium fluoroborate crystals. This invention produces large-size single crystals, is simple to operate, and highly practical, representing a superior ammonium fluoroborate single crystal growth process.

The application discloses an interface control liquid for prelithiation electrodes, a preparation method and application, and the interface control liquid comprises a solvent and a metal salt; the solvent comprises one or more of an ether solvent, an ester solvent, a ketone solvent, a hydrocarbon solvent, a nitrile solvent or deionized water; the metal salt comprises one or more of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium bisoxalate borate, lithium bisfluorosulfonimide, lithium bistrifluoromethylsulfonimide, lithium perchlorate, lithium fluoride and lithium chloride; the concentration of the metal salt is 0.001 g / mL-10 g / mL; the prelithiation electrode is obtained by supplementing lithium to an electrode by a chemical prelithiation solution; the interface control liquid is used for modifying the prelithiation electrode, the metal salt of the interface control liquid reacts with the chemical prelithiation solution remaining on the surface of the prelithiation electrode, and a solid electrolyte layer containing inorganic lithium salt is generated on the surface of the prelithiation electrode; wherein, the content of the inorganic lithium salt is between 5% and 90%.

The invention discloses a lithium ion electrolyte and a preparation method thereof as well as a lithium ion battery and a preparation method thereof. The lithium ion electrolyte comprises the following components: a lithium salt with the concentration of 1-1.5 mol / L, a fluoroborate-containing additive with the mass percent of 1-5%, a surfactant with the mass percent of 0.05-1% and the balance of a mixed solvent system, the mixed solvent system comprises tris (2, 2, 2-trifluoroethyl) phosphate, 1, 3-dioxolame and tetrahydrofuran; the preparation method of the lithium ion electrolyte comprises the following steps: preparing a mixed solvent system, adding a lithium salt and stirring; adding a fluoroborate-containing additive and a surfactant, stirring, and filtering; the lithium ion battery comprises a lithium ion electrolyte, a positive plate and a negative plate, the preparation method of the lithium ion battery comprises the following steps: assembling the positive plate, the diaphragm and the negative plate into a battery cell, and injecting the lithium ion electrolyte into the battery cell. The low-temperature discharge performance and the low-temperature cycle performance of the lithium ion battery are improved.

The invention relates to a novel lithium metal battery ether electrolyte and a preparation method thereof, the electrolyte comprises the following components: a non-aqueous organic solvent system, a lithium salt and an additive, the non-aqueous organic solvent system is preferably selected from ethylene glycol dimethyl ether and 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether; the additive is preferably selected from lithium nitrate, lithium difluoro (oxalato) borate, tris (pentafluorophenyl) borane and pentafluorophenoxy cyclotriphosphazene; the lithium salt comprises at least one of lithium bis (fluorosulfonyl) imide, lithium bis (trifluoromethylsulfonyl) imide, lithium difluoro (oxalato) borate, lithium hexafluorophosphate and lithium tetrafluoroborate; the invention also provides a preparation method of the electrolyte and a battery formed by the electrolyte. The electrolyte provided by the invention realizes low impedance, high conductivity and long cycle life while maintaining high energy density, and provides an effective solution for safe and reliable operation of a metal lithium battery under harsh working conditions of high surface capacity, high current density and the like.

The application discloses a kind of polysubstituted phenol derivatives and electrochemical preparation method thereof, which uses 2-(benzo[d]thiazole-2-yl)-4-substituted phenol, substituted pyrazole or benzimidazole as raw material, tetrabutylammonium tetrafluoroborate as electrolyte, a mixture of hexafluoroisopropanol and dichloromethane (volume ratio 7:3) as solvent, direct electrolysis reaction under air atmosphere at room temperature to obtain the target product shown in formula one or formula two. Research has found that such products have good solid fluorescence and exhibit aggregation-induced emission properties in tetrahydrofuran and water systems. The method of the application has the advantages of simple operation, good compatibility of substrate functional groups, mild conditions, low production process cost and environmental friendliness.

The invention discloses a free radical addition tandem cyclization reaction of N-aryl acryloylbenzamide or 2-aryl-N-acryloyl indole or N-methacryloyl-2-phenylbenzimidazole with potassium selenocyanate under visible light conditions, using cheap KSeCN as a selenocyanation reagent, potassium persulfate and the like as an oxidant, 2,4,6-triphenyl tetrafluoroborate and the like as a phase transfer catalysis and photocatalytic bifunctional catalyst to carry out a selenocyanation cyclization reaction. The reaction synthesizes selenocyanide isoquinoline-1,3 (2H, 4H)-diketone, indole [2,1-a] isoquinolinone and benzimidazole [2,1-a] isoquinoline-6 ​​(5H)-one in moderate to excellent yields under room temperature and visible light. The method has the advantages of mild reaction conditions, good substrate compatibility, large-scale synthesis, simple operation, cheap and easily available raw materials, simple preparation, and stable structure.

The invention relates to the technical field of organic electrochemical synthesis, and discloses a carborane cage boron free radical and a preparation method and application thereof.The structural formula of the carborane cage boron free radical is shown in the formula I. The preparation method has the advantages that in-situ generation of boron free radicals under the electrochemical condition is achieved for the first time; a B-N bond of diazo-carborane tetrafluoroborate is electrochemically reduced to generate a boron center free radical with reaction activity, the free radical can efficiently initiate a series cyclization reaction of 2-isocyano aryl sulfide, and a carborane benzothiazole skeleton is constructed in one step.

The invention relates to a preparation method of a Co-based MOF material constructed based on H3BTTC. The preparation method comprises the following steps: adding a ligand and a metal salt into N, N-dimethylacetamide through a conventional solvothermal synthesis method, adding a tetrafluoroboric acid aqueous solution to adjust the pH value and polarity of the solution, heating and crystallizing in a drying oven, washing a product with a solvent for multiple times, and carrying out vacuum drying to obtain a target material. The method can accurately regulate and control pore channels, conditions are mild and efficient, the performance of the material in the fields of gas adsorption and separation, catalysis, sensing and the like is effectively improved, and the remarkable advantages are enhanced.